Journal
ELECTROCHIMICA ACTA
Volume 178, Issue -, Pages 886-899Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.08.072
Keywords
Dye-sensitized solar cell; Counter electrode; Alloy electrocatalyst; Electrocatalytic reaction
Categories
Funding
- Fundamental Research Funds for the Central Universities [201313001, 201312005]
- Shandong Province Outstanding Youth Scientist Foundation Plan [BS2013CL015]
- Shandong Provincial Natural Science Foundation [ZR2011BQ017]
- Research Project for the Application Foundation in Qingdao [13-4-198-jch]
- National Natural Science Foundation of China [21503202, U1037604]
- National Key and National Key Technology Support Program [2012BAB15B02]
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Dye-sensitized solar cell (DSSC) has been considered as a potentially cost-effective alternative to silicon solar cell. By optimizing three components of a typical DSSC including a dye-sensitized wide-bandgap semiconductor photoanode for creating and transporting electrons, n redox electrolyte, and a counter electrode (CE) for reducing oxidized species in electrolyte, a maximum power conversion efficiency of 13% has been determined. The high cost of DSSCs is to a large part dictated by the high loading of Pt required to catalyze the triiodide reduction reaction. Arguably one of the arising routes to reduce fabrication cost of DSSCs with no sacrifice of catalytic activity of CEs is to alloy Pt with other metals/ nonmetals or to replace Pt with Pt-free alloys. In this perspective paper, we outline the advances of alloy CEs in comparison with other alternatives such as carbonaceous materials and conductive polymers and their hybrids including design concepts, fabrication approaches, and properties. Finally, this review launches prospects and challenges of promising alloy CEs for their applications in high-efficiency DSSCs. (C) 2015 Elsevier Ltd. All rights reserved.
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